13:1 compression

what piston/rod length to get to aprox 13:1
96 cc s600 noonan heads
.100 tall bae block
4.467x 4.150
.070 head gasket
looks like i will need a total of 89cc poured total=13:1

im doing a 75%od c screw low od low boost class

what compression is the nhra roots combo now . that maybe what i need

everything i have now is 10.6:1 111cc total poured and lengthening rod isnt enough with my current
piston need .120 taller rod but can only lengthen rod .040 (im .055 below now)

thanks

 

With piston .015"down, .070" head gasket, 96cc chamber, a 30cc dome gives you 13:1

 

we have a couple of those pistons if you need them